(() => {
    function postDelete(url) {
        return fetch(url, {
            method: 'POST',
            headers: { 'X-Requested-With': 'XMLHttpRequest' }
        }).then((response) => response.json());
    }

    function handleLocationDelete(id) {
        if (!confirm('Diesen Standort wirklich loeschen?')) {
            return;
        }
        postDelete('?module=locations&action=delete&id=' + encodeURIComponent(id))
            .then((data) => {
                if (data && data.success) {
                    window.location.reload();
                    return;
                }
                alert((data && data.message) ? data.message : 'Loeschen fehlgeschlagen');
            })
            .catch(() => alert('Loeschen fehlgeschlagen'));
    }

    function handleBuildingDelete(id) {
        if (!confirm('Dieses Gebaeude wirklich loeschen? Alle Stockwerke werden geloescht.')) {
            return;
        }
        postDelete('?module=buildings&action=delete&id=' + encodeURIComponent(id))
            .then((data) => {
                if (data && (data.success || data.status === 'ok')) {
                    window.location.reload();
                    return;
                }
                alert((data && (data.message || data.error)) ? (data.message || data.error) : 'Loeschen fehlgeschlagen');
            })
            .catch(() => alert('Loeschen fehlgeschlagen'));
    }

    function handleFloorDelete(id) {
        if (!confirm('Dieses Stockwerk wirklich loeschen? Alle Raeume und Racks werden geloescht.')) {
            return;
        }
        postDelete('?module=floors&action=delete&id=' + encodeURIComponent(id))
            .then((data) => {
                if (data && data.success) {
                    window.location.reload();
                    return;
                }
                alert((data && data.message) ? data.message : 'Loeschen fehlgeschlagen');
            })
            .catch(() => alert('Loeschen fehlgeschlagen'));
    }

    function handleRoomDelete(id) {
        if (!confirm('Diesen Raum wirklich loeschen? Zugeordnete Dosen werden mitgeloescht.')) {
            return;
        }
        postDelete('?module=rooms&action=delete&id=' + encodeURIComponent(id))
            .then((data) => {
                if (data && data.success) {
                    window.location.reload();
                    return;
                }
                alert((data && data.message) ? data.message : 'Loeschen fehlgeschlagen');
            })
            .catch(() => alert('Loeschen fehlgeschlagen'));
    }

    function bindDeleteButtons() {
        document.querySelectorAll('.js-delete-location').forEach((button) => {
            button.addEventListener('click', () => {
                handleLocationDelete(Number(button.dataset.locationId || 0));
            });
        });

        document.querySelectorAll('.js-delete-building').forEach((button) => {
            button.addEventListener('click', () => {
                handleBuildingDelete(Number(button.dataset.buildingId || 0));
            });
        });

        document.querySelectorAll('.js-delete-floor').forEach((button) => {
            button.addEventListener('click', () => {
                handleFloorDelete(Number(button.dataset.floorId || 0));
            });
        });

        document.querySelectorAll('.js-delete-room').forEach((button) => {
            button.addEventListener('click', () => {
                handleRoomDelete(Number(button.dataset.roomId || 0));
            });
        });
    }

    document.addEventListener('DOMContentLoaded', bindDeleteButtons);
})();